The suns rays

UVC

It is a sterilizing ray that is carcinogenic and can kill small organisms on contact.

UVC rays presently, do not enter the atmosphere and reach earth.

There are currently no sunscreens that protect against UVC light.

UVB

Considered the "Burning Ray", it produces sunburn, and penetrates into the epidermis (outer protective layer) of the skin. It is considered to be responsible for inducing skin cancer due to the DNA damage it causes.